Grinding-mill.



F. ANSLEY.

' GRINDING MILL.

APPucAUoN FILED FEB.1,1915.

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To all whom it may concern."

Be it known that L'FRANK ANSLEY, a citi- Zen of the United States of America, residingu at Spokane, in the county of Spokane and State of lVashington, have invented certain new and useful Improvements in Grinding-Mills, of which the following is a specification. i

rThis invention pertains to grinding mills and has for its object to provide a mill which shall render a maximum amount of efliciency in grinding ores and consume a minimum amount of power.

To be more specific the invention pertains to that class of grinding mills where grinding/rods are mounted in a drum and adapted to rotate, whereby by the rotation of the drum and the grinding together of the rods and the rock to be ground, the rock is pulverized and conveyed away bymeans'fthereto provided.

, The class to which the invention pertains is well portrayed in my co-pending application filed January 14, 1915, under Serial of 1915 Number 2273. l

A special object of the invention is to provide movable bearings in the heads of the drum whereby by the rotation of the drum thebundles of rods in rthe bearings will drop a distance together and fall over and against each other whereby the rock co-` mingled with the rods is more effectively ground and pulverized.

A further object of the invention is to provide means whereby the length of the movements of the bearings carrying the ends of the bundles of rods may be regulated to give the desired length of drop to the rods as may be desired in crushing rock of different consistencies and under different condi A Y, y annular fiange 30 as an inside l'support for Other and further objects and noveltiesv ring V31 is pla'ced between the platev `25fand the flange 30 tol make a dust-proof joint; 'The wall 32 offthe opening 27 supports the `rods 224 'and .the plate 33 secured to the.v

tions.

will be more fully hereinafter described, illustrated in the accompanying drawings and pointed out in the appended claims.

In the drawings, Figure 1,-is a broken-Vl away sectional view of a grinding millvof the character mentioned taken on the line 1--1 of Fig. 2, and embodying my inve ntion, Fig. 2, is an end elevation ofthe mill with the plates covering the bearings cary rying the ends of the rods removed and with the shaft supporting the drums sectioned. Fig. 3, is a ysectional view taken on the line 3-3 of Fig. 2. Fig. 4, is a sectional view I Specification of Letters Patent.

' vApplication filedv February 1, 1915.

4pulverized rock passes.

Serial No. 5,369.

taken on the line 4 4 of "'Fig. 2, and Fig. 5, is a lsectional view taken. on the line 5 5 of Fig. 2.

In a detail description, a mill of the character described is shown on'the'order of my` said co-pending application where` an `inner drum and an outer drum 11 are supported by a horizontally arranged and transversely disposed shaft 12 with which they are adapted to rotate, the shaft 12 being supported as by brackets 13 having bearings 14 in which the shaft 12 is adapted to rotate. On the outer surface of the drum 11 are shown screens 15 through which the A hopper 16 is shown into which the rock is fed, there being an auger feed 17 at the base thereof to convey the rock through the wall 18 into the'open space 19 fromwhence it passes in the' direction of the arrows through the openingv`20 to a space 21 where the same is brought into contact` with the bundles of rods 22. Y f

Spaced apart in the vertical heads 23 of the outer drum 11 are openings 24 in which are mounted plates of a length to leave rammen Piaiy eo, isis.

Yi rca Y aportion of the spaces 24 unoccupied, the.

plates 25 being adapted to slide in the openings 24. Removable filling pieces 26 are provided and adapted to fit into the openings 24 to shorten or lengthen the slidable movement of the plates 25. Oblong openings 27 are provided in the plates 25 and are preferably provided with corrugated 'edges 28.

Into these openings 27l the ends of the rods 22 have their supportsand bearings.

The drum 11 vis spaced around the drum 10 by an annular channel' .support 29 into which are secured theplates 33.l The openings 24 in the plates 'areprovided. with an the slidable plates 25. gasket Or' packing the shaft 12 is rotated as by the sprocket wheel 35 carrying the drums 10 and 11 with it and rock fed into the hopper 1G has found its way to the space 21 and in contact with ido ' the rods 22, the plates 25 on the down-going side of the drum 1l in a counter vclock-wise movement will slide in the space 2st striking drum ll will strike against the wall 24h ofV the opening 24 crushing the mass of rods 22 into the rock and pulverizing the same, while the individual rods 22 will tumble over each other in the oblong openings 27 further pulverizing the rock, the corrugations 28 assisting in giving additional movement to the rods to further the pulverizing process. The inserts 26 are removed or any number may be added to properly regulate the length of the-movement of the plates 25. A suitable packing 36 is placed between the ends of the plates 33 where they join together to make a dust proof joint.

What is claimed is, e

l. A lgrinding mill comprising a drum mounted on a rotatable shaft'and having slots in its end Walls, slidable plates freely movable in said slots, and grinding rods having their ends freely supported in said plates,V

2. A grinding mill comprising a drum y mounted on a rotatable shaft and having slots in its end walls, slidable'plates freely movable in said slots, grinding rods having their ends freely supported in said.l plates, and means for adjusting the' length of the slidable movement of said plates.

3. A grinding mill comprising two concentric drumsmounted on theI same shaft and having an open space `between them; the outer one of said drums -having slots 'in its end walls; slidable plates movable inv said slotsand rods having their ends freely comprising removable obstructions supported in said plates and` between said drums. Y

el. A grinding mill comprising two concentric drums mounted on the same shaft and having an open space between them; the outer one of said drums having slots in its end walls; slidable plates movable in said slots, rods having their ends freely supported in said plates and between said drums, and means for rotating said drums.

5. A grinding mill comprising two concentric drums mounted'on the same shaft and having an open space between them; the outer one of said drums having slots in its end walls; slidable plates movable in said slots, rods having their ends freely sup ported in said plates and between said drums, and means for rotating said drums, together with means for adjusting the length of the slidable movement of said plates.

6. A grinding mill comprising two concentric drums mounted on the same shaft and having anr open space between them; the outer one of said drums having slots in its end walls; slidable plates movable in said slots, rods having their ends freely supported in said plates and between said drums, means for rotating said drums, and means for adjusting. the length of the slidable movement of said plates, such "means placed inthe path of said plates.

In testimony whereof I affix my signature in presence oftwo witnesses.

FRANK ASLE Y.

Witnesses:

A'r'rwoon A. KIRBY, L. L. WEsTrALL. Y 

